Home / 31,460.48-47,166.72-20,378.24

Finding the Fourth Proportional to 31,460.48, 47,166.72 and 20,378.24

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Solution

The fourth proportional to 31,460.48, 47,166.72 and 20,378.24 is: 30,551.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,460.48 : 47,166.72 = 20,378.24 : x
  2. Step 2: Convert to fraction form
    31,460.48/47,166.72 = 20,378.24/x
  3. Step 3: Cross multiply
    31,460.48x = 47,166.72 × 20,378.24
  4. Step 4: Simplify right side
    31,460.48x = 961,174,740.17
  5. Step 5: Solve for x
    x = 961,174,740.17/31,460.48
  6. Step 6: Final answer
    x = 30,551.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.